Strip severing machine



J ly 7, 1964 A. c. DAVIS STRIP SEVERING MACHINE '7 Sheets-Sheet 1 Filed July 9, 1962 ATTORNEY CZ//a/7 C7, D BY/ July 7, 1964 A. c. DAVIS STRIP SEVERING MACHINE '7 Sheets-Sheet 2 Filed July 9, 1962 Fly 5. INVENTOR O I CZl/ar: c, Dav-4s Fly, 5.

ATTORNEY July 7, 1964 A. c. DAVIS STRIP SEVERING MACHINE 7 Sheets-Sheet 5 Filed July 9, 1962 VIIIIIIIIIIIIIIIIIIII INVENTOR al/a'n C Dad-1:5

ATTORNEY July 7, 1964 A. C. DAVIS STRIP SEVERING MACHINE 7 Sheets-Sheet 4 Filed July 9. 1962 INVENTOR CZ//ar; c. Dav/2s ATTORNEY July 7, 1964 A. c. DAVIS STRIP SEVERING MACHINE 7 Sheets-Sheet 5 Filed July 9, 1962 INVENTOR CZl/om C", Dav/Is I BY/ July 7; 1964 A. c. DAvl 3,140,026

? STRIP SEVERING-MACHINE Filed July 9, '1962 '7' Sheets-Sheet 6 ATTORNEY July 7, 1964 A. c. DAVIS 3,140,026

STRIP SEVERING MACHINE Filed July 9, 1962 7 Sheets-Sheet 7 United States Patent 3,140,026 STRIP SEVERING MACHINE Allan C. Davis, Baltimore, Md., assignor to F. A. Davis & Sons, Inc., a corporation of Maryland Filed July 9, 1962, Ser. No. 208,412 8 Claims. (Cl. 2251iltl) This invention relates to a strip or web dividing machine which separates a continuous web into separate form lengths at lines of weakening transversely of the web between each form.

In business machines, checks, bills, statements, and other record sheets are printed or otherwise indicated on a continuous strip or web and the strip is scored at regular intervals by a weakening transverse line between each form and the purpose of the present machine is to separate these webs on each transverse weakening line between each form. The present invention is directed to improvements on the machine shown in the application of the inventor filed December 5, 1961, Serial No. 157,- 099. In this application the tension on the web as it speeds through the machine is increased at the weakened line to burst the web on that line, in the center of the weakened line. The tension is continued to carry the tear on the weakened line to the Web sides or edges.

The present invention relates to improvements in the mechanism to adjust the bursting elements along the length of the web in relation to the tensioning rolls, to make them coincide with the weakened lines in the stack of the web folded on the weakened lines.

Another object of the invention is to adjust the receiving tray in length so that it corresponds to the length of the web which has been separated.

Another object of the invention is to so improve the web tensioning means as to assure a complete and uniform tear and to avoid any possibility of wrinkling or folding the forms as tension is applied to them.

Another object of the invention is to adapt the feeding tray to enable it to adjust the bursting mechanism to burst at each weakened fold line and yet have the feeding tray receive accordion plaited stacks of web which are folded with a weakened line intermediate the folded edges of the stacks.

Another object of the invention is to make it possible to adjust the machine to webs which have been folded along weakened lines into block form with opposite sides of the adjacent forms up, but with each form so folded, scored transversely through the center of the block to indicate forms a fraction the size or length of those folded.

The setting of this machine makes it possible to adjust the rolls feeding the web and the bursting mechanism at the time of the separation of the web into these separate forms so that they will separate not only on the weakened lines at the places of fold, but also the weakened lines intermediate the folds of the larger forms into two or more forms of a length shorter than that between the fold lines.

Other objects and advantages of the invention will be apparent from the following description and the accompanying drawings forming a part hereof, and in which:

FIGURE 1 is a side elevational view of the preferred form of the machine of this invention.

FIGURE 2 is a vertical longitudinal sectional view of the left hand end of the machine.

FIGURE 3 is a similar view of the intermediate portion of the machine.

FIGURE 4 is a similar view of the right hand end of the machine.

FIGURE 5 is a partial elevational view of the front end of the machine, with a portion in section.

FIGURE 6 is a horizontal sectional view of the front end of the machine.

3,140,026 Patented July 7, 1964 ice FIGURE 7 is a partial horizontal sectional view of the rear end of the machine.

FIGURE 8 is a longitudinal vertical fragmentary sectional view showing the positioning of the feeding tray to burst the web folded on weakened lines and having weakened lines intermediate the folds.

FIGURE 9 is a fragmentary sectional view showing the intermediately weakened line web stacks in the feeding tray.

FIGURE 10 is a fragmentary sectional view on line Iii-10 of FIGURE 3.

FIGURE 11 is a vertical transverse sectional view showing the supports for the levers connecting the feeding and receiving trays.

FIGURE 12 is a vertical transverse fragmentary sectional view from the rear of the rear roll web pulling mechanism.

FIGURE 13 is a longitudinal vertical sectional view through the front end of the machine showing an alternate form of the feeding tray and its extension mechanisms.

FIGURE 14 is a fragmentary sectional view illustrating the setting of the feeding tray of FIGURE 13 to set the machine for bursting Webs on an intermediate line of weakening when folded in stacks having such an intermediate line.

FIGURE 15 is a fragmentary longitudinal sectional view showing the extension .of the front of the feeding tray of FIGURE 13 to receive stacks of web to burst them also on the intermediate weakening line.

FIGURE 16 is a horizontal sectional view on line 16-16 of FIGURE 13.

FIGURE 17 is a vertical sectional view on line 17-17 of FIGURE 16.

FIGURE 18 is a fragmentary rear elevational view illustrating the web guide bar and rolls.

FIGURE 19 is a fragmentary longitudinal sectional view showing guide fingers that may be retracted.

FIGURE 20 is a fragmentary horizontal sectional View through the front of the machine illustrating the holding means for the guide fingers of FIGURE 19.

In the drawings similar numerals refer to similar parts throughout the several views.

The machine of this invention has side frames 1 which are connected at its front by bars 2. A continuous bed plate 3 is mounted on the frames 1 at the front by angles 4 and it continues through the length of the machine, being bent vertically as shown at 5 and has welded to its lower edge the sloping portion 6, forming the bottom of a tray section with sides 7 connected to the frames 1 as at 8. A V-belt 9 is mounted on forward pulley 10 and rearward pulley 11, forward pulley 10 being mounted on shaft 12, mounted in brackets 13 pivoted to the side frames at their lower ends and held by slack takeup mechanisms 14 at their tops. Pulley 11 is mounted on stub shaft 15 held on pins 16 mounted in brackets 17 welded to vertical plate 5 as shown in FIGURES 3 and 7 and 12. The shaft 15 is urged vertically on pins 16 by springs 18.

The bursting mechanism comprises a pulley 19 mounted on shaft 21 which is in turn mounted on pins 22 mounted in brackets 23 welded to uprights 24. Shaft 21 is urged upwardly in brackets 23 by springs 25. Belt 9 is urged slightly upwardly between the pulleys 10 and 11 by pulley 19. The roll 26 is mounted on uprights 24 slightly forward of pulley 19. A removable roll 27 is mounted on uprights 24 in slots 28. A pull roll 29 is mounted on brackets 30 immediately, above shaft 15 mounting pulley 11.

A feed tray 31 having outwardly projecting U-bars 32 on the outside of its sides is mounted on rolls 33 on the side frames 1. The U'-bars extend rearwardly of the tray and are supported by other rolls 34. The uprights 24 are supported on the U-bars 32 by welding thereto at their lower ends so that the uprights move longitudinally with the feed tray.

A receiving tray 35 has outwardly extending U-bars 36 welded to its outer sides which slide on rolls 37 mounted on the side frames of the machine. The ex tending tray section having bottom 6 and sides 7 on the downwardly projecting section of the bed plate 3 fits within the sides and above the bottom of the receiving tray as shown in FIGURES 3 and 7. Levers 38 are mounted on rod 39 pivoted in brackets 40 mounted on the side frames 1 as shown in FIGURE 11. These levers have rods 39 connecting them to the rear of tray 31 at 40' and at the other end of the levers, they are connected by rods 41 to the rear of receiving tray 35, as shown at 42.

Web hold down fingers 43 are pivoted around the ends of roll 26, and hold down fingers 44 are mounted on bracket 45 pivoted on the shaft of roll 29 adjacent its ends. Delivery tray 35 is cut out as shown at 45' to admit the operators fingers to remove a stack of severed web sections.

U-bar 32 in the right side of tray 31 is angled upwardly and is held in clamp 58 by screw and nut 59 to lock the tray 31 in adjusted position.

Spreading rolls 46 are mounted on stub-shafts 47 which are in turn mounted on pins 48 in brackets 49 welded to plate 5. Brackets 49 which support the inside ends of the shafts 47 are slightly shorter horizontally than the similar brackets that support the outside ends of these shafts, so as to place the shafts at a slight angle from the center of the machine outwardly toward tht forward end of the machine, so as to direct the rolls 46 with slight angularity outwardly toward the rear of the machine thus to spread the web or stretch it from the center outwardly to remove any wrinkles that may have formed in the web. It will be noted the angled rolls 46 bear upwardly substantially vertically against the center of roll 29, as of course does the pulley 11. Springs 48' on pins 48 urge rolls 46 up.

In operation, an accordion plaited stack of web 50 alternately folded on the weakened lines is placed in the feed tray 31 as shown in FIGURE 2. The feed tray bottom has slots 51 extending longitudinally therein through which fingers 52 mounted on bars 2 pass. The web then passes around rolls 53 and 54 mounted on the side frames 1 of the machine and bar 55 is at first removed through slots 56 in the side frames. Slot 56 is angled upwardly forward but has a shoulder 57 spaced from the front of the side frames so that when the bar 55 is pushed back in its slot 56 against the web, pulling the web back between the rolls 53 and 54, the bar then falls horizontally at its forward edge and is held in its proper position in the slots 56 by the shoulders 57. The web then continues to the rear where it is initially passed under the bursting roll 26 with upper tension roll 27 having been removed. After passing the web under roll 26 the web is looped rearward and the roll 27 inserted in the loop and dropped in the slots 28, the web is then threaded rearwardly beneath roll 29 and above the rolls 11 and 46. The machine is then threaded for operation.

The feed tray 31 is moved rearwardly until the fingers 52 contact the rear edge of the block of web which is against the forward end of the tray 31 and this spacing positions the uprights 24 of the bursting mechanism 19, 26, and 27, to burst the web on the weakened line which is the fold line of the stack as shown in FIGURE 2 and as described in detail in the above identified application. The spacing of the feed tray 31 also spaces the receiving tray 35 so that the severed sections of the web are received therein in an overlapping stack form and are held down by the fingers 44 and may be removed by the operator after accumulation.

The above operation describes the bursting of the web at the folded lines of the stack as illustrated in FIGURE 2. When it is desired to burst webs at a weakened line intermediate of the folded lines, a sample or template of the severed web as shown at 60 is placed in the feed tray as shown at FIGURE 8 and the tray is pushed rearwardly to move the sample against the fingers 52, then the web stack with the weakened lines between the folds as shown at 61 is placed within the feed tray above the fingers 52 projecting up from below simply bulges the stack centrally as shown in FIGURE 9 and the machine will then operate to sever the web not only at the fold lines but at the intermediate line for which the machine is set by the template or sample 60.

An alternate form of tray extension and guide is shown in FIGURES 13 to 17 inclusive in which the bottom of the tray 31 instead of having the slots cut all the way through, has a single slot or depression 62 and a downwardly extended stop 63 mounted on the side frames of the machine by brackets 63 which serves to space the tray in its rearward movement. In this modification the forward end 64 of the tray is hinged at 65 and that end has brackets 66 slotted as at 67 and screws 68 pass through these slots and are held by nuts 69 to hold the feed tray end 64 in adjusted position either vertically as shown in FIGURES 13, 14, 16 and 17, or horizontally as shown in FIGURE 15.

The fingers serving as guides as shown at 52 may also take the form illustrated in the alternate construction of FIGURES l9 and 20 which show fingers 70 having notches 71 in their edges with a spring detent 72 fitting alternate upper or lower notches to hold the fingers either up or down, the fingers having at their lower ends collars 73 to prevent their upper removal. This alternate construction of the fingers allows the stack of web to lie flat in the feeding tray instead of being bulged upwardly as shown in FIGURE 9 when the stack is to be severed along weakened lines intermediate of the stack folds.

These modifications illustrated are only a few of those possible within the scope of the invention which it is desired should be limited only by the following claims.

What is claimed as new and is desired to be secured as Letters Patent is:

1. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear, including a forward roll web feeding device, a rearward roll web pulling device, movable means between said devices to divide the web on a weakened transverse line, means to move the dividing means to vary the spacing of said dividing means relative to one of said devices to burst webs with different regular intervals of transverse weakening, a feeding tray connected to said dividing means to move the same and to receive an accordion plaited stack of webs, said tray being mounted on the machine to move longitudinally of the machine and by such movement varying the spacing of said dividing means relative to said devices, said tray having longitudinal slots therein, stop means mounted on the machine beneath the tray and projecting upwardly through said slots, the stack of web, when in the tray, abutting the stop means and limiting the tray movement to space the dividing means to divide web with spaced weakened lines corresponding to those in the stack.

2. The bursting machine of claim 1 including means to lock the tray in fixed position and means to extend the tray area to receive stacks of length greater than that for which the tray is initially positioned and locked.

3. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear, including a forward roll web feeding device, a rearward roll web pulling device, movable means between said devices to divide the web on a weakened transverse line, means to move the dividing means to vary the spacing of said dividing means relative to one of said devices to burst webs with different regular intervals of transverse weakening, a receiving tray connected to said dividing means variable in length longitudinally of the machine, the spacing of the dividing means varying the length of the receiving tray to accommodate web sections of a length corresponding to the setting of the dividing means.

4. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear including a forward roll web feeding device, a rearward roll web pulling device, movable means between said devices to divide the web on a weakened transverse line, means to move the dividing means to vary the spacing of said dividing means relative to one of said devices to burst webs with different regular intervals of transverse weakening, a feeding tray connected to said dividing means to move the same and to receive an accordion plaited stack of web, said feeding tray being mounted on the machine to move longitudinally of the machine and by such movement varying the spacing of said dividing means relative to said one of said devices, said tray having a longitudinal slot therein, stop means mounted on the front of the machine and projecting into said slot, the stack of web, when in the feeding tray abutting the stop means limiting the feeding tray movement to space the dividing means to divide the web with spaced weakened lines corresponding to those in the stack, a receiving tray variable in length longitudinally of the machine connected tosaid feeding tray, the spacing of the dividing means by movement of said feeding tray varying the length of the receiving tray to accommodate web sections of a length corresponding to the setting of the dividing means.

5. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear including a forward roll web feeding device, a rearward roll web pulling device, means between said devices to divide the web on a weakened transverse line, means to vary the spacing of said dividing means relative to one of said devices to burst webs with different regular intervals of transverse weakening, a feeding tray connected to said dividing means to move the same and to receive an accordion plaited stack of web, said feeding tray being mounted on the machine to move longitudinally of the machine and by such movement varying the spacing of said dividing means relative to said one of said devices, means to limit movements of the feeding tray to space the dividing means to divide the web with spaced weakened lines corresponding to those in the stack, a receiving tray variable in length longitudinally of the machine, means connecting both said trays, the spacing of the dividing means, by movement of said feeding tray, through said tray connecting means, varying the length of the receiving tray to accommodate web sections of a length corresponding to the setting of the dividing means.

6. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear including a forward roll web feeding device, a rearward roll web pulling device, means between said devices to divide the web on a weakened transverse line, means to vary the spacing of said dividing means relative to one of said devices to burst webs with different regular intervals of transverse weakening, a feeding tray connected to said dividing means to move the same and to receive an accordion plaited stack of web, said feeding tray being mounted on the machine to move longitudinally of the machine and by such movement varying the spacing of said dividing means relative to said one of said devices, means to limit movements of the feeding tray to space the dividing means to divide the web with spaced weakened lines corresponding to those in the stack, a receiving tray variable in length longitudinally of the machine, a lever pivotally mounted in said machine and rods connecting said lever to both said trays, the spacing of the dividing means, by movement of said feeding tray, through said lever and rods, varying the length of the receiving tray to accommodate web sections of a length corresponding to the setting of the dividing means.

7. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear including a forward roll web feeding device, a rearward roll web pulling device including rolls for one face of the web spaced transversely centrally thereof, means to drive said devices, the pulling device faster than the feeding device, means between said devices to divide the web on a weakened transverse line, rolls spaced laterally fiorn the centrally spaced rolls of said pulling device on axes diverging at their outer ends rearwardly from the axis of the pulling device centrally positioned rolls to spread the web marginally from said centrally positioned rolls.

8. A bursting machine for a continuous web of forms weakened transversely at regular intervals between forms, the web advancing in the machine from front to rear including a forward roll web feeding device, a rearward roll Web pulling device including rolls for one face of the web spaced transversely centrally thereof and a roll extending across the machine for the opposite face of the web, means to drive said devices, the pulling device faster than the feeding device, means between said devices to divide the Web on a weakened transverse line, rolls spaced laterally from the centrally spaced rolls of said pulling device on axes diverging at their outer ends rearwardly from the axis of the pulling device centrally positioned rolls, said centrally spaced rolls and said diverging axis rolls being positioned to bear, through the web, against said roll extending across the machine, the diverging axis rolls spreading the web marginally from said centrally positioned rolls.

References Cited in the file of this patent UNITED STATES PATENTS 2,246,228 Winter June 17, 1941 2,252,736 Sherman et a1 Aug. 19, 1941 2,375,542 Euth May 8, 1945 2,513,093 Hageman June 27, 1950 

1. A BURSTING MACHINE FOR A CONTINUOUS WEB OF FORMS WEAKENED TRANSVERSELY AT REGULAR INTERVALS BETWEEN FORMS, THE WEB ADVANCING IN THE MACHINE FROM FRONT TO REAR, INCLUDING A FORWARD ROLL WEB FEEDING DEVICE, A REARWARD ROLL WEB PULLING DEVICE, MOVABLE MEANS BETWEEN SAID DEVICES TO DIVIDE THE WEB ON A WEAKENED TRANSVERSE LINE, MEANS TO MOVE THE DIVIDING MEANS TO VARY THE SPACING OF SAID DIVIDING MEANS RELATIVE TO ONE OF SAID DEVICES TO BURST WEBS WITH DIFFERENT REGULAR INTERVALS OF TRANSVERSE WEAKENING, A FEEDING TRAY CONNECTED TO SAID DIVIDING MEANS TO MOVE THE SAME AND TO RECEIVE AN ACCORDION PLAITED STACK OF WEBS, SAID TRAY BEING MOUNTED ON THE MACHINE TO MOVE LONGITUDINALLY OF THE MACHINE AND BY SUCH MOVEMENT VARYING THE SPACING OF SAID DIVIDING MEANS RELATIVE TO SAID DEVICES, SAID TRAY HAVING LONGITUDINAL SLOTS THEREIN, STOP MEANS MOUNTED ON THE MACHINE BENEATH THE TRAY AND PROJECTING UPWARDLY THROUGH SAID SLOTS, THE STACK OF WEB, WHEN IN THE TRAY, ABUTTING THE STOP MEANS AND LIMITING THE TRAY MOVEMENT TO SPACE THE DIVIDING MEANS TO DIVIDE WEB WITH SPACED WEAKENED LINES CORRESPONDING TO THOSE IN THE STACK. 